——Are your parents doctors, too?——No, they are teachers. ___ of them love teaching very much.
They are doing much better ___ Math ___ the help of their teacher.
South Korea is ___ the east of China.
The pupils will go to the museum ___ foot and come back ___ bus.
—There are so many cars on the road. You should obey the traffic rules and go ___the zebra.—OK. I will follow your advice.A. cross B. across C. through D, around
—There is a large beautiful bridge ___ the river in this town